Aspergillus niveus

Date: 26 November 2013

Light microscopy at 1000x stained with lacto-phenol cotton blue.

Copyright:

Images were kindly provided by Niall Hamilton Copyright Fungal Research Trust

Notes:

Distinctive features

Colony characteristics. Colonies (CzA) growing rather slowly, white.Microscopy. Cinidiophore stipes smooth walled, hyaline, up to 1000 micrometre long. Conidial heads small, radiate to loosely columnar, white, becoming dull ivory with age. Vesicles hemispherical, 8-15 micrometre diam. Conidiogenous cells biseriate. Metulae covering the upper one- to two-thirds of the vesicle. Conidia spherical, hyaline, 2-2.5 micrometre daim, smooth walled.


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  • Culture plates on different media. A Colonies on CZ at 24oC, B on CYA at 20oC C on SAB at 37oC, D on CYA at 24oC

    persiicolonies

  • D Sinusitis radiology with fluid level

  • C Bronchiectasis white cell scan (right) – left shows a normal scan for comparison

  • B Bronchogram showing bronchiectasis

  • A Bronchogram showing saccular bronchiectasis

  • Mucous containing Charcot-Leyden crystals, stained with H & EA 57 year old woman presented with breathlessness. She had a history of mild asthma for which she occasionally took salbutamol inhaler puffs. The patient underwent a pneumonectomy because of the severity of her disease process, and uncertainty about the diagnosis, prior to serology results being obtained.Serology showed an IgE of 2600, with a strongly positive Aspergillus RAST test and weakly positive Aspergillus precipitins. Material re